Documents to download

On 20 December 2015, voters in Spain went to the polls to elect a new Congress of Deputies—the first chamber of the country’s bicameral Parliament—and Members of the Senate—the second. No political party won an outright majority in elections for the new Congress of Deputies, leading some commentators to argue that Spain has entered a new era of coalition government. Incumbent Prime Minister Mariano Rajoy has stated that he will attempt to form an administration.

Congress of Deputies 

The conservative Popular Party (Partido Popular), led by Prime Minister Mariano Rajoy, won the most seats in the new Congress of Deputies, winning 123 seats in the 350 seat chamber on 28.7 percent of the vote, but lost its absolute majority (the party had had 186 seats in the previous Congress after elections held in 2011, ten more than the 176 needed to form a government). The Socialists (Partido Socialista Obrero Español— PSOE), led by Pedro Sánchez, won 90 seats on 22 percent of the vote; the anti-austerity Podemos (We Can) movement, led by Pablo Iglesias, won 69 seats on 20.6 percent of the vote; and the liberal Ciudadanos (Citizens) party, led by Albert Rivera, won 40 seats on 13.9 percent of the vote. Separatist movements performed strongly in the Basque Country and Catalonia.

Senate

Voters also elected 208 of the 266 Members of the Senate in the general election (the remaining 58 are nominated by regional Parliaments). The Popular Party retained an absolute majority in the Senate, having won 124 of the contested seats (compared to 136 in 2011). The Socialists won 47 seats (compared to 48 in 2011) and Podemos won 16 seats (the party was founded in 2014).

Constitutional Process

Elected deputies are scheduled to be sworn in on 13 January 2016, after which they will elect a Speaker. King Felipe VI, who acceded to the Spanish throne in June 2014 following the abdication of his father, King Juan Carlos I, is then expected to play a key role in the nomination of the head of government as set out in Section 99 of the constitution.  After discussions between the King and the political parties, the monarch will propose a candidate for the position of President of the Government (Prime Minister) through the Speaker of the Congress. This candidate will be sworn into office if he or she is supported by an absolute majority of deputies—or if this is not possible, by a simple majority in a second round of voting to be held 48 hours later. If the first candidate is unable to secure an absolute or simple majority, the King may put forward new candidates for the position. If no candidate is able secure the confidence of the Congress of Deputies two months after the first vote, the King “shall dissolve both Houses and call for new elections, with the countersignature of the Speaker of the Congress”.


Documents to download

Related posts

  • British Sovereignty Protection (Chagos Islands) Bill [HL]: HL Bill 15 of 2026–27

    The British Sovereignty Protection (Chagos Islands) Bill [HL] is a private member’s bill sponsored by Lord Weir of Ballyholme (Democratic Unionist Party). The bill would restrict any cession or transfer of sovereignty of the British Indian Ocean Territory (BIOT) unless certain requirements were met, including the consent of the Chagossian people and an act of parliament. It would also see the UK remain sovereign over the military base on Diego Garcia.

    British Sovereignty Protection (Chagos Islands) Bill [HL]: HL Bill 15 of 2026–27
  • Genocide Determination Bill [HL]: HL Bill 13 of 2026–27

    The bill would enable the High Court in England and Wales, the Court of Session in Scotland and the High Court in Northern Ireland, to make preliminary determinations on whether a genocide is occurring overseas, or if there is deemed to be a serious risk of one occurring. The bill would require the government to refer the preliminary determination to international bodies such as the International Court of Justice.

    Genocide Determination Bill [HL]: HL Bill 13 of 2026–27
  • Convention establishing an international claims commission for Ukraine

    The UK is a signatory to the convention establishing an international claims commission for Ukraine. The commission would assess claims for compensation for damage and losses caused by Russia’s full-scale invasion of Ukraine in 2022. The House of Lords International Agreements Committee has broadly welcomed the convention, but also raised concerns about the scope and efficacy of the commission.

    Convention establishing an international claims commission for Ukraine